I tried to take apart my barrel and nozzle but I ended up destroying the threads underneath the nuts, and the barrel still wouldn't move. And that's after I left the barrel and nozzle together in acetone for a few days.

I did try heating the assembly with a heat gun and some plastic did ooze out the back but I still cannot see any light at the end of my barrel/nozzle assembly. I don't know if the heat gun got hot enough but I don't own a propane torch.

Seeing as how the above poster had his barrel snap in two, I guess I'll quit while I'm ahead and then stick my barrel/nozzle back in acetone.

It is marginally less prone to jamming, significantly easier to take apart, and more expensive than buying a bunch of used V3Bs from the for-sale section on the forums. I'm pretty sure if you post a "want to buy: V3Bs" you'll get several hits for $10-15 for complete hotends (not just nozzles) ready-to-go.

Custom 3D printing for you or your business -- quote [at] pingring.org